| ARP | Address Resolution Protocol |
|---|---|
| CAM | Content Addressable Memory (in switches) |
| CGNAT | Carrier-Grade NAT |
| DHCP | Dynamic Host Configuration Protocol |
| FQDN | Fully Qualified Domain Name |
| LAN | Local Area Network |
| LB | Load Balancing |
| NAT | Network Access Translation |
| QinQ | stacking VLAN ("802.1Q in 802.1Q") |
| VLAN | Virtual LAN |
| VXLAN | virtual extensible LAN |
| WAN | Wide Area Network |
| WLAN aka: Wifi | Wireless LAN |
| Samba | File sharing compatible with Windows and others |
| OpenSSH | secure shell |
| Pidgin | chat via XMPP |
| Privoxy | Filtering proxy |
| ntopng | monitoring network flows |
| Wireguard | VPN |
If you want to learn about network stuff, the best idea is to start a homelab and configure services yourself. There is a whole subreddit for homelab enthusiasts.